Combined sewer-pipe and manhole.



No. 799,479. PATENTED SEPT. 12, 190-5. F. A. LOVE-TOY.

COMBINED SEWER PIPE AND MANHOLE.

APPLICATION FILED MAR. 15,1905.

UNITED STATES PATENT oFFIoE.

FREDERICK A. LOVEJOY, OF BOSTON, MASSACHUSETTS.

COMBINED SEWER-PIPE AND MANHOLE.

Specification of Letters Patent.

Patented Sept. 12, 1905.

Application filed March 15, 1905. Serial No. 250,315.

To all whom, it may concern:

the sewer-pipes and their connections in conjunction with manholes, theobject being to facilitate and improve the construction of this class ofwork. This object I attain by means shown in the accompanying drawings,in Which- Figure 1 is a horizontal section of the ma' sonry of amanhole, taken on line C D of Fig. 2, also showing the connectedsewer-pipes. Fig. 2 is a vertical section of the same parts, taken online A B of Fig. 1. Fig. 3 is a plan view of a sewer pipe having anopening adapted to receive my closure device. Fig. 4 is a cross-sectionof the sewer-pipe, taken on line E F of Fig. 8; Fig. 5, a detail; Fig.6, a

plan of the cover of the sewer-pipe; Fig. 7, a cross-section of thesewer-pipe, taken on line I J of Fig. 3; Fig. 8, a longitudinal verticalsection taken on line K L of Fig. 3. Fig. 9 is a cross vertical sectionof the pipe, showing the cover and one of the cam-bars that are used forfastening the cover securely to the pipe.

In the drawings, Figs. 1 and, 2, a horizontal and vertical system of asewer-manhole is shown. The construction of this manhole need not beparticularly described, as it is not essentially different from theordinary manhole. The novelty consists in its combination with thesewer-pipes P and m. The pipe P is formed by a sinkage made in the baseof the manhole, as shown in Figs. 1 and 2.

The pipe m is made of metal of any desired shape and size and is builtinto the masonry of the manhole. The pipe m has an opening on its upperside, as shown in Figs. 3 and 8. The said opening has located at pointson its edge ears t t. Each of the ears 5 t has holes 9", as shown inFig. 8. These holes 7* are made to receive the cam-bolts n w. Theopening in the pipe is closed by a cover 0, Figs. 4, 6, 8, and 9. Thiscover has handles we at its ends and is locked in position by means ofcambolts 02 92. These bolts w n are shown in Figs. 5 and 9 and are bent,as shown in Fig. 9, so that when the handle part a is turned downthebend will press with a cam-like action on the cover oand hold itfirmly in place. If a very tight joint is required between the cover 4 0and the edge e of the opening in the sewerpipe m, a gasket W may beused.

In practical operation the manhole-masonry, as shown in Figs. 1 and 2,serves as afirm and reliable support for thesewer-pipes and admits ofplacing one pipe nearly or quite over the otherthat is, the two pipescould be laid in a single trench and the one manhole serve for bothpipes. This feature is of especial value in rock-excavation anddecreases the cost of excavation in all trenchwork.

The pipe m, as shown, is located above the pipe P, and its fiat closedtop forms a convenient shelf for the temporary placing of tools, &o.

I claim 1. The combination of a masonry-built manhole having asewer-sinkage in the base, and a sewer pipe or pipes passing throughsaid manhole and built into its masonry; substantially as and for thepurpose set forth.

' 2. The combination of a masonry-built manhole having a sewer-sinkagein the base; a sewer-pipe passing through said manhole and built intoits masonry, and having a closure device consisting of a cover andcam-bolts and means for operating said bolts; substantially as and forthe purpose set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 8th day of March, A. D.1905.

FREDERICK A. LOVEJOY.

